, that is moving across western fairfax county into montgomery county over the next hour or so. flash flood watch has been extended until noon tomorrow. but first, a high temperature today, well below average. at 79 degrees at reagan national, a morning low 71. at the record low -- a record high was 99. temperatures are warming to the south, 80 degrees at memphis. the warmer air is pushing through the day. this will allow the thunderstorms to develop late tomorrow afternoon into the evening. cooler, drier air on the way for the start of the upcoming work week. lots of moisture from the south. we're watching tropical storm danny, barely holding on to the tropical storm status. at the beach tomorrow, be careful with. current, definitely happening out there courtesy of the tropical storm. -- be careful of the rip current. around noon tomorrow, they have extended the flash flood watch, but to midcounty, howard county, prince george's, anne arundel county, fairfax, possibility of heavy downpours on the saturated ground. the cool, dry air arrives monday, daytime high, ready for this, only in the 70's.